Question

In the below image arrow (A) represents the heat going out while arrow (B) represents the heat coming in. Identify these types of reactions from the given options.

• A. Arrow A:- Exothermic
• B. Arrow B:- Exothermic
• C. Arrow A:- Endothermic
• D. Arrow B:- Endothermic

Answer 1

Answer: (A), (D)

The correct options are
A

Arrow A:- Exothermic

D

Arrow B:- Endothermic

Exothermic Reaction:- It is a reaction in which energy is released in the form of heat or light.

The combustion of wax produces heat and light. Hence, A is an exothermic reaction.

Endothermic Reaction:- It is a reaction in which the heat energy is absorbed.

Wax melts on absorbing the heat generated by the combustion of wax. Hence, B is an endothermic reaction.